thnk you for your answer.
I found a example for a multiphase Waterdrop simulation.
I think i reconstruct it very well , within the simulationsparameter. But it dint work :(.
But when i try to creat a sim run i got this message: "Error: Both materials are associated with the same phase. Multiphase simulation requires each material to be associated with a different phase. "
What does phase mean ?! In the example projekt, are both materials (Water and Air) associated with the same Mesh region…
Link too the example project https://www.simscale.com/workbench/?pid=6666373424334244483#tab_1-0
Link too my project https://www.simscale.com/workbench/?pid=7389752343948659340#tab_1-0